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Untreated glasses lenses do not transmit light perfectly, in fact up to 8% of light is reflected by the lens. Therefore, it is common to treat the lenses with an anti reflective solution, but which one?

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If lenses are treated with anti glare, the loss would not change, the reflection would simply be less clear. Which is why glasses use an anti reflective coating, not an anti glare coating – it both prevents reflections and facilitates the transmission of light. Note that the application of anti reflective coatings can be a spray and bake, vacuum deposition or lens integrated process. Therefore, the coatings cannot be applied at home.

Anti glare and anti reflective are terms which are often taken to mean the same thing, but which actually describe two different mechanisms. Though the end result may appear the same (a lack or lessening of reflection), one uses diffusion while the other reduces the difference in refractive index between air and the glass.

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Note: * Backside UV reflection protection is available on selected coatings – Stainless LUV, Ice and Fusion Ice ** Blue-violet light filtering technology is available on selected coatings – Indigo HD and Indigo

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Glass is everywhere in our daily lives. From the displays and touchscreens we use to the windows that protect us from the elements in our homes and vehicles, we look at or through glass all day long. And for those who wear glasses, it is literally the lens through which we see the world. We all know the annoyance of dealing with reflections and glare, even in the occasionally rainy Canada. But, of course, there is a coating for that. An anti reflective coating or anti glare coating eliminates nuisance light from our glass surfaces.

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The application process for an anti reflective or anti glare coating is not as simple as applying a paint. Anti reflective coatings are multiple microscopic layers applied through vacuum deposition technology. Fortunately, there are companies in Canada that apply these highly technical optical coatings. For more information, or if you need anti reflective coating for your project or wish to contact an anti glare spray supplier, our experts are here to help. In cooperation with our coating partners, we strive to provide the best coating solution for your coating needs. Simply contact us through e-mail, or the “Request a quote” button at the bottom of this article.

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Anti Reflective coatingPhysics

Anti glare and anti reflective coatings have overlapping effects, but some applications only work with anti reflective and others only with anti glare coatings. Some of the most common uses of these coatings are:

These coatings create a textured surface that uses diffusion to “break down” reflected light from a surface. What this means is that rather than reflecting the light directly (like, for example, with a mirror), the light is dispersed at different angles. This makes the reflection blurry and less visible, reducing its intrusion on our vision and allowing the glass to transmit more clearly. Anti glare coatings deal with external sources of light, such as sunlight or headlights or lamps.

Simply put, anti glare coatings create a non-uniform surface which disperses light and makes reflections less visible, while anti reflective coatings are a transparent layer which causes reflections to interfere and ‘cancel each other out’.

Anti reflective coatingdisadvantages

The addition of an anti reflective coating to glasses not only allows them to transmit more light, it also alleviates eye strain by enhancing visual acuity. For example, when driving at night glasses wearers often see a halo effect around oncoming headlights due to reflection. With an anti reflective coating, this effect is eliminated. The same effect can contribute to eye strain when working at a computer, and is also alleviated by the addition of the coating.

If your lenses are in good shape and scratch-free, we can add the AR coating and send them back to you, good as new. The AR coating will reduce glare, improve ...

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Anti glare spray exists and is often mistaken to be meant for eye- and sunglasses. This isn’t the case: an anti glare spray is a product used by photographers who work with extremely glossy (thus reflective) surfaces. If you are interesetd in an anti reflection product, check out the following anti reflection spray:

iCoat anti-reflective coatings are formulated using unique and proprietary chemical compositions, combined with a premium bonding layer for powerful adhesion to the lens substrates. Icoat AR coatings address various optical lens related complaints such as distracting glare and halo effects, cleanability and scratch resistance. All iCoat anti-reflective coatings combine ion-impacted static-neutral coating technology with ultra tough chemical layers that are virtually impervious to wear and tear. All anti-reflective coating processes takes place in a cutting edge vacuum chamber that ensures precise control of all parameters of the coating layers. The result is a dense and smooth lens surface with glare-free properties, making your lenses impermeable to static, scratches, solvents and chemicals.With iCoats anti-reflective coatings your lenses appear thinner and your eyes look more natural.

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Also known as AR coatings, anti reflective coatings are a layer designed to manipulate incoming light. When light passes through any glass, a small percentage is reflected back. The strength of this reflection depends on the refractive indices of the two substances (in this case air and glass). Anti reflective coatings add a clear layer whose refractive index is different again, causing the reflected light waves to interfere and diminish in strength. Unlike anti glare coatings, anti reflective coatings work for light from both directions, both internal and external sources of light.

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